Railway car brake



Oct. 13-, 1931. R. w. JOY

RAILWAY CAR BRAKE Filed Dec. 8, 1928 3 Sheets-Sheet l wx TH 'Oct. 13, 1931. R. w. JOY

RAILWAY CAR BRAKE Filed Dec. 8, 1928 3 Sheets-Sheet 2 o 0 Q 7 W Q\\ o o vvw W\ w wm QM NuQ Oct. 13, 1931. R. w. JOY

RAILWAY CAR BRAKE Filed Dec. 8, 1928 3 Sheets-Sheet 3 1 n ay cers andrmore.

35 mnpperendsof thelinks are formed with open Patented Oct. 13, 1931 7 l f f lininwnyicnnkennxn 'w "inppiias' iop:inea'pec mbe 1831-928; sum-No; 324,646;

This invention.neiatesiobrakes for rail fish-e clasp brake ype ainidiit is a-n iobjectof this inventionito provide an. rniprovedbrake 1foriraiiwaylcars which 1W-i11 lIlSUIG equalized pressures onthe; wheels 1 at opposite isi'des of. 'rshecer 'trnck, gandrt 1S1"1$O-aI1" ob ect:f-th1s; .7 in'vention to provide an improved means for insuring equalized 'pressnreson the wheels at :effectireK-in 2 11*positionseofrtheHuck. It 1s opposite sides oftheca'rtruck which willdoe i'also 'z n object oisthis invent-ioni to provide an" equalizing" I means [which While pant'icularlyf adapted for n-usef inf connection wlthfclaspi brakes, may .alsobe used with brakes of other W q; l W iEI-r these and: otheiiiob ect'slngvlew, as v LWi-il. appear inore-tfully hereinafter, the 1ncoinp nying dravvingsi andafinal'ly pointed out intheappended-gelelms. I

In =the drawings:

, o-f'ione-lizilfo f aw car truck' equipped .=;With

inventionyfihe truckbolster-being Omitted;

tion of the car furuck Side being shown;

4 fishe part al atop view. Zthe eort'ionfoifi the car trnckgshewn in Flg; 5 2;;the

7 Sis-2iquartnrlVertical transverse sec- ;tion. taken on t'he'line 5'5;0f-F1g. 1";

centers and' oined together aticen ected tqnede the.

particulerlyzto vbrakes of jGGtiOII S formed castings v mention consists substantially Iinthe construe e011,. combination, location and relatiyei arr-- gemenei e thetperts, allas ew11 1 ibei more fully herein setrforth, as shown in thepiac Figure 1- is aiy'erticellongitudinalsections Fig. 2 'is Vertical: longitudinal section oi :the other half of thel car ;-t.r 'uckv shown in p I t 1*;26heving openingsyat theirlowerend'tore-v siceivekpins28 Whichengage in openings in I yth'e lugs 30 on the brake-headswhile the engaging'iniopenings;in brackets 43 aiidfi lA ettkxched to the:frame endmemher 12'.-1 ffp I Pivotallyinounted onfpin :beti?veen the Slug-3210f thebrake head13 is a'brake leverv i \lirhavingits upper end-:pivotally connected} i ,ibhrqllgh eiislack. adjusterA5" with: the 'speced which aremounted jourznal boxes, not 'shQwn, v e

connected by end frame members 10' and '12, ;the end frame members beingsecured to pm The brake system vin which journai-bo xesare j011rna1ed iex1e's c having th'e wheels 6 1n0unted:=there0n.' J'Ad; acent tl ieir centers the side frames "are'con- ,anec'ted: shy transoms 8 and atltheirl Lends jare illustrated is of th'e clasp: i *brake type comprising; on each" siderof the truck, brake-heads 13, "14', 15 and 16 carrying [shoes which, engage oppositel sides :of the vyheels. The brake'headpli'iiis supported by 11I1kS -l8 and v19 having their lower ends; pro-- 'VidQd-With openingsto receive a 'pin20 which' extends thronghthe openings in-the links 18 and {l9'and'thron ghlthe openings in thefspacedf lugs 21 formed a on 'the brake head: 18,- The i supper iends ofthe links; are. stormed with op enings to receive pins, the-link 1=8 .exfiend ing into an opening between lugs :formd ine rtegrai' with the pedestal pasting-f8 and rei ,ceiving 'apin'22 mountedinopeningsin'the lugs; '=.The' link-19 'extendsintoianopening v v iffbl'meddn a bra'cket24 attached to the frame jendsmember *lO andihavingilugs provided qwith openings to receiverpi'n 25 which engages. in thelopeningxin :the link-119. The

;b'1:a-ke heads Hand 15 arev snpporlted by links l gs receiving pins 32 engaging in Openings hezids whilevthe-iipper endsl ofthe linkssa're tension members 46 the other ends of which are connected with the upper end of a brake lever 48 pivotally mounted on pin 28 between the lugs 30 of the brake head 14. The lower end of the brake lever 48 is connected by a, compression member 50 to the lower end of a brake lever 52, which is pivot-ally -mounted on pin 28 between the lugs 30 of the brake head 15. The upper end of the brake lever '52 is pivotally connected tothe spaced tension members 54 the opposite ends of which are pivotally connected through slack adjuster 56 to the upper end of brake lever 58. The brake lever 58 is pivotally mounted on pin 38 between the lugs of the brake head 16 and has its lower end piv otally'connected to a bracket 60 attached to a brake beam 62, the end of the brake beam being connected through links 64 to the pedestal casting 3. It will be understood that any suitable or desired slack adjuster may be used to connect levers 144 and 58 to the tension members 46 and 54, respectively, but the slack adjusters illustrated are shown and described in my application, Serial No. 277,159, filed May 12,1928. 1 a

The upper ends of the brake levers 48 and 52 are provided with. outwardly projecting arms 49 and 53,,respectively. to: engage with the spaced tenslon members '46 and 54 which extend on opposite'sides of the wheels and the lower ends of these brake levers are provided with arms extending to one side per mitting the use of an offset yoke in connection with the compression member to pro vide a clearance for the adjustable spring plank supports 110 mounted in the swing links 112.

at its ends is provided with lever arms 76 having openings 77 in their free end-sin which are received the rounded ends 78 formed on the radius bar 80. The radius bar is provided with brackets 82 in which are mounted rollers 84 which travel on curved guides 86 attached to the brackets 74, the curvature of the guides 86 corresponding with the travel of the upper ends of the lever arms ;76 so that the radius bar 80 ismaintained in a horizontal position throughout all itsmovements. Movement is imparted to the radius bar 80 through a connection 88 having a roller 90 which engages the radius bar 80. The connection 88leads to the brake cylinder and permits of the swinging of the truck on curves without changing the direction of pull of the connection 88.. To return the brakes to release position, there is provided a rod 104 which engages in an opening 106 in the lever arm '70 and projects through an opening in a bracket 108 attached to the frame end member 10. Mounted on the rod 104 is a spring 100 confined between the bracket 108 and a washer 102 secured on the rod 104.

In operation, application of pressure to the connection 88 will cause the radius bar 80 through the lever arms 76 to rotate the torsion shaft 72 andoperate the lever arm 7 0 which, through the links .68, will operate the brake'beam 66, applying pressure to the brake levers 144 and engaging the brake shoes carried by the brake heads 13 with the wheel. The levers 144 will pivot about the pins 20 and through the tension members 46, brake levers 48, compression members 50, brake levers 52, tension members 54 and brake lever 58 apply the shoes carried by the brake heads 14, 15 and 16 to the wheels. It will be noted that no matter what the position of the truck with respect tothe car body and the resultant application of the pressure through the connection 88 to one side or the other of the radius bar 80 that, because of the lever arms 7 6 and torsion shaft 72, the braking pressure is always applied through the lever arm to the center of the brake beam 66, and thus is applied equally to the brake shoes at the opposite sides of the truck.

W'hilethe preferred form of the invention has been shown and described, it is to be understood that the invention is not limited to the exact details of construction shown and described as it is obvious that various modifications thereof. within the scope of the claims will occur to persons skilled in the art. I

What is claimed is: v

1.. In a railway brake, a brake beam, a torsion shaft connected to said beam and a radius bar operatively connected to said shaft.

2, In a railway brake, a brake beam, a

torsion shaft connected to said beam at the center of the latter and a radius bar operatively connected to said shaft. r

3. In a railway brake, a brake beam, a tor sion shaft connected to said beam and a radius bar having itsends operatively connected to said shaft.

4. In a railway brake, a brake beam, a torsion shaft connected to said beam at the center of the latter and a radius bar having its ends operatively connected to said shaft.

sion shaft connected at its center to the center of said beam and a radius bar having its ends operatively connected to the ends of saidshaft. 6. In a railway brake, a brake beam, brake shoe levers connected to the ends of said beam, a shaft connected at its center to the center of said beam, a radius bar having its ends connected to the ends of said shaft and a power connection to said radius bar.

' 7. In a railway brake, a brake beam, a shaft,

5; In a railway brake, a brake beam, a tora radius bar, a connection between said shaft and said brake beam" at'the center-thereof,

and lever arms on said shaft connected to the 7 ends of" said radius bar.

8. In a railway brake,

brake *heads, links supporting said brake heads, brake levers brake levers, brake I beams connecting the lower ends of opposite outside brake levers,

- links connecting one of said brake beams to the truck frame, a shaft, a radius bar, a lever arm at the center of said'shaft'connected to the center of the other brake beannjlever arms v connections between said shaft and radius "bar at the endsxthereof andguidesfor the p at the ends of said shaft connected to theends of said radius bar and a power connection to said radius bar.

shaft, a radius bar, aconnection between said brake-beam and shaft atthe centersthereof,

ends of said radius bar. o a a 11. In a'railwaynbrake, a brakeobeam a tween the ends of said brake beam.

brake, brakeheads on op-, posite sides of'the car truck, links supporting said brake heads, brake levers connected to said brake heads and supported thereby, a brake beam connecting} said brake levers,-'a

curved to maintain said radius bar parallel to its original position during movement of said bar.

16. In a railway brake,a brake,beam,a radius bar, and means .operatively connecting the radius bar and brake beam. for transmit.-.

tingforce to a point substantially midway be-g 17. In a railway brake, a brake ed by the radius bar, and meansconnecting beam,a,radius bar, a torsion shaft adapted to be shiftthe torsion shaft and brake beam for apply I 7 ingvforce to the'said brakebeam at a point substantially-midway between the ends thereof to actuate said-brake beam.

18. In arailwaybrake, brakeshoes,a brake beam for actuating said shoes,a radius bar,

means for applying; force to the radiusbar at Y various points. to shift said bar horizontally,- and an equalizing operative connection be- 'tween the radius bar andsaidrbrakebeam adapted to actuate the brake shoes uniformly regardless of the poi t. f applicationof Ce tosaid radius bar'." I

19; In afrailway truck, in combination with a-brake beam,'brakepshoes adapted to'be ac} tuated thereby, and a radius bar, means for applying uniform force to the brake shoes 4 a compr sing a connection between saidradius bar and brake beam for applying force to the latter at a point substantially midwaybe- I tween the brake shoes.

In witness whereof I have hereuntofset ROBERT W. JOY;

shaft connected to said "beam, aradius bar operatively connected to said shaft and guides for said radius bar curved to hold said v radius bar parallel to its original position during movement of said radius bar.

12. In a rallwaybrakej, a brake beam,-a,

shaft connected'to said beam, crank arms carried by said shaft, a radius bar pivotaly connected to said crank arms and guides for said 7 radius barcurved to a'pproximatethe path ofmovement of the points of connection vof I said radius bar and-crank arms;

13. In a railway brake, a brake beam, a l

, shaft, a radius bar, crank arms fixed to said shaft and connected to said brake beamand radius bar and curved guides for-said radius bar to hold saidradius bar parallel to itsoriginal position during movement of saidlradius bar. s

14. Ina railwaytruck,a brake beam, a shaft connected, to said beam, a radius bar operatively connected to said' shaft, and 7 guides cooperating with said radius bar dur- V a ingits movement for maintainingsaid bar.

parallel to its original position.

15. A brake for use with a cartruck com prising a brake beam, a shaft'connected th'ereto, aradius bar operatively connected to saidv n shaft, and guides secured to atr'uck part and 

